The government is to formally adopt a definition of what constitutes antisemitism, which includes over-sweeping condemnation of Israel, with Theresa May saying the measure will help efforts to combat hate crime against Jews.

Britain will become one of the first countries to use this definition of antisemitism, as agreed last May at a conference of the Berlin-based International Holocaust Remembrance Alliance (IHRA), the prime minister will say in London.

A Downing Street statement said the intention of such a definition was to “ensure that culprits will not be able to get away with being antisemitic because the term is ill-defined, or because different organisations or bodies have different interpretations of it”.

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The IHRA’s definition reads: “Antisemitism is a certain perception of Jews, which may be expressed as hatred toward Jews. Rhetorical and physical manifestations of antisemitism are directed toward Jewish or non-Jewish individuals and/or their property, toward Jewish community institutions and religious facilities.”

More detailed guidance on this, released by the IHRA in May, said this could include criticisms which target Israel, if this was “conceived as a Jewish collectivity”. It added: “However, criticism of Israel similar to that levelled against any other country cannot be regarded as antisemitic.”

The guidance says it could be considered antisemitic to accuse Jews of being more loyal to Israel or their religion than to their own nations, or to say the existence of Israel is intrinsically racist.

There will be one definition of antisemitism – and anyone guilty of that will be called out on it

Theresa May

Concerns about criticism of Israel as a state potentially crossing into overt antisemitism has had particular recent resonance in British politics over recent months, with the Labour leader, Jeremy Corbyn, commissioning a report into the issue in his party.

In October, the vice-chair of the Corbyn-supporting group Momentum, Jackie Walker, was removed from her post in the wake of remarks questioning the need for security at Jewish schools, and about Holocaust Memorial Day.

A spokeswoman for Corbyn said he and Labour agreed with the IHRA’s definition. She said: “Jeremy Corbyn and the Labour party share the view that language or behaviour that displays hatred towards Jews is antisemitism, and is as repugnant and unacceptable as any other form of racism.”

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According to excerpts of her speech released in advance, May will say: “It is unacceptable that there is antisemitism in this country. It is even worse that incidents are reportedly on the rise. As a government we are making a real difference and adopting this measure is a groundbreaking step.

“It means there will be one definition of antisemitism – in essence, language or behaviour that displays hatred towards Jews because they are Jews – and anyone guilty of that will be called out on it.”

Police forces already use a version of the IHRA definition to help officers decide what could be considered antisemitism.

In a speech last month, the home secretary, Amber Rudd, recommitted the government to providing extra security for Jewish schools, synagogues and other community buildings.

Referring to the threat both from Islamist militancy and from a renewed surge in rightwing extremism, she said: “We take the security of the Jewish community seriously, and we will continue to put in place the strongest possible measures to ensure the safety of this community and all other communities, too.”